Range Report  .50 cal ballistics info?

BryanLitz

Sergeant
Commercial Supporter
Minuteman
Re: .50 cal ballistics info?

Sectional density is 0.363 lb/in^2.
You can figure sectional density from caliber and weight with the formula:
SD = bullet weight/7000/caliber^2

For example,
SD = 661/7000/.510^2 = 0.363 lb/in^2.

-Bryan
 

ChefEd

Sergeant
Minuteman
Sep 16, 2008
118
1
55
CG, AZ (SC Lowcountry expat)
Re: .50 cal ballistics info?

Thanks guys,
Bryan thanks for the info, "SD = 661/7000/.510^2 = 0.363 lb/in^2." WTF,
Man you'r talking to a guy that is straight out of the South Carolina public school system, I'd love for you to go over that one again.

And how did you figure out the BC by the dope on the Barrett site. I'd love to know how to do that as well.
I've been reading some of your other posts, fascinating stuff, it's nice to have your expertise close at hand.

Thanks for your time,
Chef
 

Doug Shooter

Sergeant
Minuteman
Oct 23, 2007
671
0
40
Coral Springs Fl
Re: .50 cal ballistics info?

Read "The Complete 50 caliber. Snipers Course" by Dean Michelis. I don't know if I spelled his last name right but that book has to ton of knowledge on the 50BMG to say the least. Its a big book about 600 pages and well worth it. You will learn how to correct for any type of conditions out there. Its a must read for 50BMG shooters. Some of the math is very complex bu at least you will know how to do it if you want.